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Screening for platelet function disorders with Multiplate and platelet function analyzer.

Floor C J I Moenen1, Minka J A Vries2, Patricia J Nelemans3

  • 1a Division of Haematology, Department of Internal Medicine , GROW - School for Oncology and Developmental Biology, Maastricht University Medical Centre +, Maastricht , The Netherlands.

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Summary
This summary is machine-generated.

Whole-blood impedance aggregometry (Multiplate) and platelet function analyzer (PFA) cannot reliably screen for mild platelet function disorders (PFDs) in preoperative or referred patients. However, both assays can effectively detect Glanzmann thrombasthenia in diagnosed patients.

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Area of Science:

  • Hematology
  • Clinical Diagnostics
  • Platelet Physiology

Background:

  • Light transmission aggregometry (LTA) is the gold standard for diagnosing platelet function disorders (PFDs), but it is labor-intensive and confined to specialized labs.
  • Rapid screening tools like whole-blood impedance aggregometry (Multiplate) and platelet function analyzer (PFA) are needed to assess platelet function.
  • The diagnostic utility of Multiplate and PFA for PFDs requires further evaluation, especially in diverse patient populations.

Purpose of the Study:

  • To evaluate the diagnostic performance of Multiplate and PFA assays in identifying platelet function disorders (PFDs) compared to light transmission aggregometry (LTA).
  • To assess the ability of Multiplate and PFA to detect specific PFDs, such as Glanzmann thrombasthenia (GT), in patients with diagnosed bleeding disorders.
  • To determine if Multiplate and PFA can serve as effective screening tools to rule out mild PFDs in preoperative and referred patient cohorts.

Main Methods:

  • Retrospective analysis of data from preoperative patients, patients referred for bleeding evaluation, and patients with diagnosed bleeding disorders.
  • PFDs were defined by light transmission aggregometry (LTA) criteria (≥2 abnormal LTA curves).
  • Diagnostic performance was assessed using sensitivity, specificity, and area under the receiver operating characteristic curve (AUC) for Multiplate and PFA.

Main Results:

  • In preoperative and referred patients, Multiplate and PFA showed low sensitivity (0-40%) and AUCs near 0.50 for detecting mild PFDs, indicating poor discriminatory ability.
  • In patients with diagnosed bleeding disorders, both Multiplate and PFA demonstrated high sensitivity (100%) and AUCs (0.70-1.00) for detecting Glanzmann thrombasthenia (GT).
  • The assays failed to differentiate between patients with and without mild PFDs in the preoperative and referred groups.

Conclusions:

  • Multiplate and PFA are not suitable as screening tests to rule out mild platelet function disorders in preoperative or referred patients.
  • Both Multiplate and PFA are effective in diagnosing Glanzmann thrombasthenia in patients with a known bleeding disorder.
  • Further research may be needed to optimize screening strategies for mild PFDs in at-risk populations.